XMM-Newton and Optical Observations of Cataclysmic Variables from SDSS

Abstract

We report on XMM-Newton and optical results for 6 cataclysmic variables that were selected from Sloan Digital Sky Survey spectra because they showed strong HeII emission lines, indicative of being candidates for containing white dwarfs with strong magnetic fields. While high X-ray background rates prevented optimum results, we are able to confirm SDSSJ233325.92+152222.1 as an intermediate polar from its strong pulse signature at 21 min and its obscured hard X-ray spectrum. Ground-based circular polarization and photometric observations were also able to confirm SDSSJ142256.31-022108.1 as a polar with a period near 4 hr. Photometry of SDSSJ083751.00+383012.5 and SDSSJ093214.82+495054.7 solidifies the orbital period of the former as 3.18 hrs and confirms the latter as a high inclination system with deep eclipses.

31 pages, 14 figures. Accepted for publication in the Astronomical Journal

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• The Sloan Digital Sky Survey: Technical Summary
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• The XMM-Newton Optical/UV Monitor Telescope
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• X-ray and optical observations of 1RXS J154814.5-452845: a new intermediate polar with soft X-ray emission
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• Characterizing Three Candidate Magnetic CVs from SDSS: XMM-Newton and Optical Follow-up Observations
• XMM-Newton and optical follow-up observations of three new polars from the Sloan Digital Sky Survey

Cited by in corpus (8)

• Magnetic White Dwarfs
• Evidence for reduced magnetic braking in polars from binary population models
• Cataclysmic Variables from SDSS VII. The Seventh Year (2006)
• K-Band Spectroscopy of (Pre-)Cataclysmic Variables: Are Some Donor Stars Really Carbon Poor?
• Identifying a new intermediate-polar using XMM-Newton and INTEGRAL
• Very fast photometric and X-ray observations of the intermediate polar V2069 Cygni (RX J2123.7+4217)
• UGPS J194310+183851: an Unusual Optical and X-ray Faint Cataclysmic Variable?
• VLBI astrometry on the white dwarf pulsar AR Scorpii